int main(int argc, char* argv[])
{
    int shu,a,b,c,d,e,f,g,h,i,j,k,l,m,n;
	scanf("%d",&shu);
	if(11<=shu&&shu<=99)
	{
		a=(int)shu/10;
		b=shu-10*a;
		printf("%d",10*b+a);
	}
	if(shu>=111&&shu<=999)
	{
		c=(int)(shu/100);
		d=(int)((shu-100*c)/10);
		e=shu-100*c-10*d;
		printf("%d",100*e+10*d+c);
	}
	if(shu>=1111&&shu<=9999)
	{
		f=(int)shu/1000;
		g=(int)(shu-f*1000)/100;
		h=(int)(shu-f*1000-g*100)/10;
		i=shu-f*1000-g*100-h*10;
		printf("%d",1000*i+100*h+10*g+f);
	}
	if(shu>=11111&&shu<=99999)
	{
		j=(int)shu/10000;
		k=(int)(shu-j*10000)/1000;
		l=(int)(shu-j*10000-k*1000)/100;
		m=(int)(shu-j*10000-k*1000-l*100)/10;
		n=(int)(shu-j*10000-k*1000-l*100-m*10);
		printf("%d",n*10000+m*1000+l*100+k*10+j);
	}

	return 0;
}

